Safety lid for tanks



A. B. FACCIANO.

SAFETY LID FOR TANKS. -APPLICATloN FILED ocT.1, 1920.

19436,@88, Patented Nov. 21, 1922.`

Patented Nov. 21, 1922.

UNITED 'STATE risata PATENT erica.

\ ARMANDO :eAUTIs'rA IACCIANO, or ROSARIO DE sANfrA rn, ARGENTINA.

SAFETY LID Foru TANKS.

To all whom 'it may concern.'

l Be it known that I, ARMANDO BAU'rIs'rAy FAooiANo, a citizen of theArgentine Re- Tanks, of which the following is a specifica-` tion.

This invention relates to safety lids or covers for tanks in general,and particularly for those destined to contain naphtha or gasoline orother products of some Value, in order to prevent the contents frombeing fraudulently extracted therefrom.

As will be seen from the following descifiption, the inventionsubstantially consists in providing the ordinary screw lids or covers,with a lockingdevice requiring a special key for its operation, in orderthat after the lid having been adjusted in position, the lock will beoperated and nobody will be able to remove or open the lid without theuse of said special key.

For the better understanding of this description, detailed drawings havebeen anneXed thereto, wherein:

Figure 1 is a side elevation of a safety lid or cover, constructed inaccordance with this invention.

Figure 2 is an upper plan view of the same.

Figure 3 is a sectional view of the same lid, applied to the mouth oropening of the tank, with the key inserted in position.

Figure 4 illustrates a plan view of a suitable device for the operationof the lock.

In said drawings, 1 indicates the ordinary lid or cover, at the frontpart of which is provided a perforation adapted to be tightly closed bymeans of the screw cap 2 and the purpose of which is to serve as keyhole. Inside the lid is secured by means of the screw 3, a casing 4,whose top 5 and bottom 6 are retained in position by means of the screws7. On the bottom 6 is mounted the means which constitute the lockingdevice. This device comprises a bolt 8 with a double dog, being guidedin its displacement by the openings of the casing and by the rearabutment sto 9. f

'lEhe tumbler 10 pivots on the stud 11,

being operated in turn by the contractionl spring 12. The tumbler isformed with a finger 13 which by taking into the notches 14 formed atthe edge of the central part of the bolt, prevent this latter from beingwithsl drawn from the projected position to which it has been carried bythe operation ofthe key 15.

On the opposite edge of said central part of the bolt is formed apartial rack 16 with which engages a toothed sector 17, operated by thedisc 18. This latter rotates freely on the rod 19 and is provided with arecess 2O for engagement with the key, and with a projecting part 21 forraising the tumbler 10 and so release the bolt from the retention finger13. j

The bit of the key is provided with notches or teeth, to correspond withthe notches formed on the casing ward 22.

` In the interior of the threaded mouth 23 of the tank, an annulargroove 24 or a series of recesses is formed, with which engage the twoheads of the bolt 8, thereby preventing the lid from being removed afterthe bolt has been carried to its locking position.

The mouth 23 and the lid 1 are fitted onto a leather washer 25.

Ther operation of the locking device is as follows: After withdrawingthe screw plug 2, the key is inserted into the opening left by thesaine, so that the extension of the key will enter into the recess ofthe disc 18. By this arrangement, the displacement of the key will guidethe said disc and this latter, while raising with its projection thetumbler 10, operates ywith the toothed sector 17 the rack 16, and inconsequence the bolt 8 which will be caused to advance and engage withits ends with the recesses or cavities 24.

Having now described my invention, I declare that what I claim, is:

1. A flanged cover for vessels having a hole in its top adapted to beclosed by a plug and provided with a` lock wholly within the cover belowthe hole thereof, the said opening when the plug is removed serving asa` keyhole, said lock comprising a sliding bolt,

a rotatable key-operated member, a bolt-op-v erating member carried bythe key-operated member, and a pivoted and spring pressed member havinginterlocking engagement with the bolt and operated bythe key-op-` eratedmember.

2. The combination with a ianfged cover for a vessel, of a lockcasingsecured in the toothed sector carried by the disk and engaging therack7 a member pivoted at one end, and a spring secured to a fixedsupport and to the other endl-ofl the'member `said member being adaptedto be operated by the pin of the disk and having a finger intermediateof its ends for engaging the notches of the bolt. f

3. A lock for covers of vessels, Comprising a easing adapted to besecured inthe cover, a sliding bolt having a forked end and provided onone edge with a rack and on its other edge with notches,a rotatablemember provided with a recess and a pin, a toothed sector carried by thesaid member, a pivoted and spring pressed `member having a inger forengaging the notches of the bolt, and a key having an extension engagingthe recess of the rotatable member` -`ARMANDO BAUTISTA FACCIANO.

Witnesses: v y l l VIENA D. BoNNnY, S. REID THOMPSON.

